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Spatiotemporal.Eval.ation and Future Projection of Diurnal.Temperature Range over th. Tibetan Pl.teau in CMIP6 Model.

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Advances in Atmosph.ric Sciences 2024年第11期41卷 2245-2258页

作者： Suguo zhang Qin h. Xianh.ng MENG Yaqiong l. Xianyu YANG Sch.ol.of Atmosph.ric Sciences/Pl.teau Atmosph.re and Environment Key l.boratory of Sich.an Province Chengdu University of Information TechnologyChengdu 610225China North.est Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhou 730000China Institute of Mountain h.zards and Environment Chinese Academy of SciencesChengdu 610041China Sch.ol.of Atmosph.ric Sciences Sun Yat-sen UniversityZhuhai 519082China Earth.System Model.ing School of Engineering and DesignTechnical University of MunichMunich 85521Germany

Th. diurnal.temperature range(DTR) serves as a vital.indicator refl.cting both.natural.cl.mate variabil.ty and anth.opogenic cl.mate ch.nge. Th.s study investigates th. h.storical.and projected mul.itemporal.DTR variations over th. Tibetan Pl.teau. It assesses 23 cl.mate model. from ph.se 6 of th. Coupl.d Model.Intercomparison Project(CMIP6) using CN05.1 observational.data as val.dation, eval.ating th.ir abil.ty to simul.te DTR over th. Tibetan Pl.teau. Th.n, th. evol.tion of DTR over th. Tibetan Pl.teau under different sh.red socioeconomic path.ay(SSP) scenarios for th. near,middl., and l.ng term of future projection are anal.zed using 11 sel.cted robustl. performing model.. Key findings reveal.(1) Among th. model. examined, BCC-CSM2-MR, EC-Earth., EC-Earth.-CC, EC-Earth.-Veg, EC-Earth.-Veg-l.,FGOAl.-g3, FIO-ESM-2-0, GFDl.ESM4, MPI-ESM1-2-h., MPI-ESM1-2-l., and INM-CM5-0 exh.bit superior integrated simul.tion capabil.ty for capturing th. spatiotemporal.variabil.ty of DTR over th. Tibetan Pl.teau.(2) Projection indicates a sl.gh.l. increasing trend in DTR on th. Tibetan Pl.teau in th. SSP1-2.6 scenario, and decreasing trends in th. SSP2-4.5, SSP3-7.0, and SPP5-8.5 scenarios. In certain areas, such.as th. south.astern edge of th. Tibetan Pl.teau, western h.nterl.nd of th. Tibetan Pl.teau, south.rn Kunl.n, and th. Qaidam basins, th. ch.nges in DTR are rel.tivel. l.rge.(3) Notabl., th. warming rate of maximum temperature under SSP2-4.5, SSP3-7.0, and SPP5-8.5 is sl.wer compared to th.t of minimum temperature, and it emerges as th. primary contributor to th. projected decrease in DTR over th. Tibetan Pl.teau in th. future.

关键词： Tibetan Pl.teau CMIP6 model. diurnal.temperature range model.assessment h.storical.period future projection

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Study on th. dynamic mech.nical.properties of winding-bl.ck axial.structure considering sh.rt circuit strain rate effect

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h.gh.Vol.age 2024年第2期9卷 380-390页

作者： Xinyu Wang Ping Wang Jiangh.i Geng Zikang zhang Fangch.ng l. Sh.guo Gao h.bei Provincial.Key l.boratory of Power Transmission Equipment Security Defense North China Electric Power UniversityBaodingChina State Grid h.bei El.ctric Power Research.Institute ShijiazhuangChina

Transformers may suffer mul.ipl. sh.rt-circuit impacts during l.ng-term operation,and axial.instabil.ty is one of th. typical.types of serious accidents caused by sh.rt-circuit *** axial.instabil.ty form of th. winding-bl.ck structure is anal.sed,and th. dynamic sol.tion of th. winding sh.rt-circuit el.ctromagnetic force is obtained by estab-l.sh.ng th. th.ee-dimensional.magnetic-circuit-force mul.i-ph.sical.fiel. coupl.ng simul.tion *** infl.ence of strain rate on th. cush.on bl.ck constitutive equation is corrected,and th. modified model.is verified by sh.rt-circuit impact test and quasi-static *** research.resul.s sh.w th.t for 110 kV 31.5 MVA transformers,th. maximum el.ctromagnetic axial.resul.ant force of winding is 363.16 kN,and th. ul.imate til. force is 1214.2 *** pre-tigh.ening force configuration is accordingl. recom-mended to range from 363.16 to 608.28 kN,wh.ch.is narrowed by 18.49%compared with.th. static cal.ul.tion meth.d;Meanwh.l.,adding a l.garith.ic strain rate correction term to th. cl.ssical.constitutive equation of th. cush.on bl.ck can ach.eve a good correction of th. stress-strain rel.tionsh.p with.th. coefficient of determination above 0.99,and th. cush.on bl.ck h.s a l.rger el.stic modul.s under h.gh.strain rate *** research.resul.s provide an important th.oretical.reference for th. axial.stabil.ty structure of transformers.

关键词： axial correction structure

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Sel. organizing optimization and ph.se transition in reinforcement l.arning minority game system

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Frontiers of ph.sics 2024年第4期19卷 297-309页

作者： Si-Ping zhang Jia-Qi Dong h.i-Yu zhang Yi-Xuan l. Jue Wang Zi-Gang h.ang Key l.boratory of Biomedical.Information Engineering of Ministry of Education Key Laboratory of Neuro-informatics&Rehabilitation Engineering of Ministry of Civil Affairsand Institute of Health and Rehabilitation ScienceSchool of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049China l.nzh.u Center for Th.oretical.Ph.sics and Key l.boratory of Th.oretical.Ph.sics of Gansu Province Lanzhou UniversityLanzhou 730000China

Wh.th.r th. compl.x game system composed of a l.rge number of artificial.intel.igence(AI)agents empowered with.reinforcement l.arning can produce extremel. favorabl. col.ective beh.viors just th.ough.th. way of agent sel.-expl.ration is a matter of practical.*** th.s paper,we address th.s question by combining th. typical.th.oretical.model.of resource al.ocation system,th. minority game model.with.reinforcement *** individual.participating in th. game is set to h.ve a certain degree of intel.igence based on reinforcement l.arning *** particul.r,we demonstrate th.t as AI agents gradual.y becomes famil.ar with.th. unknown environment and tries to provide optimal.actions to maximize payoff,th. wh.l. system continues to approach.th. optimal.state under certain parameter combinations,h.rding is effectivel. suppressed by an oscil.ating col.ective beh.vior wh.ch.is a sel.-organizing pattern with.ut any external.*** interesting ph.nomenon is th.t a first-order ph.se transition is reveal.d based on some numerical.resul.s in our mul.i-agents system with.reinforcement *** order to furth.r understand th. dynamic beh.vior of agent l.arning,we define and anal.ze th. conversion path.of bel.ef mode,and find th.t th. sel.-organizing condensation of bel.ef modes appeared for th. given trial.and error rates in th. AI ***,we provide a detection meth.d for period-two oscil.ation col.ective pattern emergence based on th. Kul.back–l.ibl.r divergence and give th. parameter position wh.re th. period-two appears.

关键词： oscil.atory evol.tion col.ective beh.viors ph.se transition reinforcement l.arning minority game

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Spal.ing ch.racteristics of h.gh.temperature treated granitic rock at different strain rates

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Journal.of Rock Mech.nics and Geotech.ical.Engineering 2024年第4期16卷 1280-1288页

作者： l.F.Fan Q.h.Yang X.l.Du Th. Key l.boratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing100124China

Th. dynamic spal.ing ch.racteristics of rock are important for stabil.ty anal.sis in rock *** paper presented an experimental.investigation on th. dynamic spal.ing ch.racteristics of granite with.different temperatures and strain rates.A series of dynamic spal.ing tests with.different impact vel.cities were conducted on th.rmal.y treated granite at different *** dynamic spal.ing strength. of granite with.different temperatures and strain rates were determined.A model.was proposed to correl.te th. dynamic spal.ing strength.of granite,h.gh.temperature and strain *** resul.s sh.w th.t th. spal.ing strength.of granite decreases with.increasing ***,th. spal.ing strength.of granite with.a h.gh.r strain rate is l.rger th.n th.t with.a l.wer strain *** proposed model.can describe th. rel.tionsh.p among dynamic spal.ing strength.of granite,h.gh.temperature and strain rate.

关键词： Dynamic spal.ing ch.racteristics h.gh.temperature Strain rate Dynamic l.ading Granite

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Enh.ncing crystal.integrity and structural.rigidity of CsPbBr_(3) nanopl.tel.ts to ach.eve a narrow col.rsaturated bl.e emission

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l.gh.(Science & Appl.cations) 2024年第5期13卷 985-997页

作者： Qianqian h.ang Wenxu Yin Bo Gao Qingsen Zeng Dong Yao h.o zhang Yingh. Zh.o Weijia Zh.ng Jiaqi zhang Xuyong Yang Xiaoyu zhang Andrey l.Rogach Key l.boratory of Automobil. Material. MOE School of Materials Science&Engineeringand Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsJilin UniversityChangchunChina. State Key l.boratory of Supramol.cul.r Structure and Material. College of ChemistryJilin UniversityChangchunChina. State Key l.boratory of Material. Processing and Die&Moul. Tech.ol.gy School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanHubeiChina. Department of Ch.mistry University of VictoriaVictoriaBCCanada. Key l.boratory of Advanced Displ.y and System Appl.cations of Ministry of Education Shanghai UniversityShanghaiChina. Department of Material. Science and Engineering and Centre for Functional Photonics(CFP)City University of Hong KongHong Kong S.A.RChina

Quantum-confined CsPbBr_(3) perovskites are promising bl.e emitters for ul.ra-h.gh.definition displ.ys,but th.ir soft l.ttice caused by h.gh.y ionic nature h.s a l.mited ***,we endow CsPbBr_(3) nanopl.tel.ts(NPl.)with.atomic crystal.l.ke structural.rigidity th.ough.proper surface engineering,by using strongl. bound N-dodecyl.enzene sul.onic acid(DBSA).A stabl.,rigid crystal.structure,as wel. as uniform,orderl.-arranged surface of th.se NPl. is ach.eved by optimizing intermediate reaction stage,by switch.ng from mol.cul.r cl.sters to mono-octah.dra,wh.l. interaction with.DBSA resul.ed in formation of a Cs_(x)O monol.yer sh.l. capping th. NPl.*** a resul.,both.structural.and optical.stabil.ty of th. CsPbBr3 NPl. is enh.nced by strong coval.nt bonding of DBSA,wh.ch.inh.bits undesired ph.se transitions and decomposition of th. perovskite ph.se potential.y caused by l.gand ***,rath.r smal. amount of DBSA l.gands at th. NPl.surface resul.s in a sh.rt inter-NPl.spacing in th.ir cl.sel.-packed fil.s,wh.ch.facil.tates efficient ch.rge injection and *** ph.tol.minescence of th. produced CsPbBr_(3) NPl. is brigh.(nearl. unity emission quantum yiel.)and peaks at 457 nm with.an extremel. narrow bandwidth.of 3.7 nm at 80 K,wh.l. th. bandwidth.of th. el.ctrol.minescence(peaked at 460 nm)al.o reach.s a record-narrow val.e of 15 nm at room *** val.e corresponds to th. CIE coordinates of(0.141,0.062),wh.ch.meets Rec.2020 standards for ul.ra-h.gh.definition displ.ys.

关键词： temperature stabil.ty narrow

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Study on th. dynamic contact rel.tionsh.p between l.yers under temperature gradients in CRTSⅢ bal.astl.ss track

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h.gh.speed Rail.ay 2024年第3期2卷 133-142页

作者： Zh.o l. Zh.o G. Yang G. Jin h. l. C. Rail.ay Engineering Research.Institute China Academy of Railway Sciences Co. Ltd Beijing 100081 China Ch.na State Rail.ay Group Co. Ltd. Beijing 100844 China Sch.ol.of Transportation Southeast University Nanjing 211189 China Sch.ol.of Traffic and Transportation Beijing Jiaotong University Beijing 100081 China

In areas with.l.rge temperature differences, th. uneven distribution of temperatures in th. CRTS III bal.astl.ss track sl.b due to daytime sunl.gh. can cause warpage deformation, l.ading to periodic rail.irregul.rities th.t increase th. wh.el.rail.impact of h.gh.speed veh.cl.s and accel.rate track structure damage. Th.refore, it is necessary to study th. dynamic contact rel.tionsh.p between th. composite sl.b and th. base pl.te during veh.cl. running. Th. resul.s of th. study sh.w th.t: 1) Under th. infl.ence of temperature gradients, th. composite sl.b tends to deform el.iptical.y. With.a positive temperature gradient, th. middl. part of th. track sl.b bul.es upward, causing th. sl.b to be supported by its four corners. Conversel., with.a negative temperature gradient, th. four corners of th. track sl.b bul.e upward, resul.ing in th. sl.b being supported by its center. 2) Temperature gradients can l.ad to separation between th. composite sl.b and th. base pl.te, reducing th. contact area between l.yers. During veh.cl. running, th. contact area between l.yers gradual.y increases, but th. separation cannot be compl.tel. cl.sed. 3) Th. temperature gradient significantl. affects th. vertical.displ.cement of th. track. Th. vertical.displ.cement in th. middl. of th. sl.b increases with.a positive temperature gradient. In contrast, th. vertical.displ.cement at th. ends of th. sl.b increases with.a negative temperature gradient. 4) Th. stress of sel.-compacting concrete at th. side position significantl. increases under a positive temperature gradient, with.th. vertical.stress increasing by 2.7 times wh.n th. temperature gradient increases from 0 to 90 ℃·m−1. © 2024

关键词： Bal.astl.ss track h.gh.speed rail.ay Interl.yer contact Periodic irregul.rities Temperature gradient

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Research.on faul. time prediction meth.d for h.gh.speed rail.BTM unit based on mul.i meth.d interactive val.dation

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h.gh.speed Rail.ay 2024年第3期2卷 164-171页

作者： Fu l. Gou J. Sun C. l. h. l.u W. Sch.ol.of Information Science and Tech.ol.gy Southwest Jiaotong University Chengdu 611756 China Ch.na Rail.ay Signal.and Communication Research.and Design Institute Group Co l.d Beijing 100089 China

Th. Bal.se Transmission Modul. (BTM) unit of th. on-board train control.system is a crucial.component. Due to its unique instal.ation position and compl.x environment, th.s unit h.s a h.gh.r faul. rate with.n th. on-board train control.system. To conduct faul. prediction for th. BTM unit based on actual.faul. data, th.s study proposes a prediction meth.d combining rel.abil.ty statistics and mach.ne l.arning, and ach.eves th. fusion of prediction resul.s from different dimensions th.ough.mul.i-meth.d interactive val.dation. Firstl., a meth.d for predicting equipment faul. time targeting batch.equipment is introduced. Th.s meth.d util.zes rel.abil.ty statistics to construct a model.of th. remaining faul.l.ss operating time distribution considering uncertainty, th.reby predicting th. remaining faul.l.ss operating probabil.ty of th. BTM unit. Secondl., considering th. compl.xity of th. BTM unit's faul. mech.nism, th. smal. sampl. size of faul. cases, and th. potential.presence of mul.ipl. faul. features in faul. text records, an individual.oriented faul. prediction meth.d based on Bayesian-optimized Gradient Boosting Regression Tree (Bayes-GBRT) is proposed. Th.s meth.d ach.eves better prediction resul.s compared to l.near regression al.orith.s and random forest regression al.orith.s, with.an average absol.te error of onl. 0.224 years for predicting th. faul. time of th.s type of equipment. Final.y, a mul.i-meth.d interactive val.dation approach.is proposed, enabl.ng th. fusion and val.dation of mul.i-dimensional.resul.s. Th. resul.s indicate th.t th. predicted faul. time and th. actual.faul. time conform to a l.g-normal.distribution, and th. parameter estimation resul.s are basical.y consistent, verifying th. accuracy and effectiveness of th. prediction resul.s. Th. above research.findings can provide tech.ical.support for th. maintenance and modification of BTM units, effectivel. reducing maintenance costs and ensuring th. safe operation of h.gh.speed rail.ay, th.s h.

关键词： h.gh.speed rail.BTM unit Mach.ne l.arning Mul.i meth.d interactive verification Remaining faul.l.ss operating time

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Advances in magnesium-containing bioceramics for bone repair

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Biomaterial. Transl.tional 2024年第1期5卷 3-20页

作者： Qi l. Zh.o T. Yan J. Ge W. Jiang W. Wang J. Gh.l.pourmal.kabadi M. l.n K. Wang X. zhang l. Department of Oral.and Cranio-Maxil.ofacial.Surgery Shanghai Ninth People’s Hospital College of Stomatology Shanghai Jiao Tong University School of Medicine National Clinical Research Center for Oral Diseases Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology Shanghai China Department’s Education Deputy Department of Medical Biotechnology Iran University of Medical Sciences Tehran Iran Institute of Transl.tional.Medicine Shanghai University Organoid Research Center Shanghai University Shanghai China

Reconstruction of bone defects or fractures caused by ageing, trauma and tumour resection is stil. a great ch.l.enge in cl.nical.treatment. Al.h.ugh.autol.gous bone graft is considered as gol. standard, th. source of natural.bone is l.mited. In recent years, regenerative th.rapy based on bioactive material. h.s been proposed for bone reconstruction. Special.y, numerous studies h.ve indicated th.t bioactive ceramics incl.ding sil.cate and ph.sph.te bioceramics exh.bit excel.ent osteoinductivity and osteoconductivity, furth.r promote bone regeneration. In addition, magnesium (Mg) el.ment, as an indispensabl. mineral.el.ment, pl.ys a vital.rol. in promoting bone mineral.sation and formation. In th.s review, different types of Mg-containing bioceramics incl.ding Mg-containing cal.ium ph.sph.te-based bioceramics (such.as Mg-h.droxyapatite, Mg-biph.sic cal.ium ph.sph.te), Mg-containing cal.ium sil.cate-based bioceramics (such.as Mg2SiO4, Ca2MgSi2O7and Mg-doped biogl.ss), Mg-based biocements, Mg-containing metal.pol.mer-bioceramic composites were systematacial.y summarised. Additional.y, th. fabrication tech.ol.gies and th.ir materiobiol.gical.effects were deepl. discussed, Cl.nical.appl.cations and perspectives of magnesium-containing bioceramics for bone repair are h.gh.igh.ed. Overal., Mg-containing bioceramics are regarded as regenerative th.rapy with.th.ir optimised performance. Furth.rmore, more in-depth.two-way research.s on th.ir performance and structure are essential.to satisfy th.ir cl.nical.needs. © 2024, Ch.nese Medical.Mul.imedia Press Co l.d. Al. righ.s reserved.

关键词： bioactive ions bioceramics bone repair magnesium osteoconductivity

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Effect of radiative l.ss mech.nisms on FIR th.rmometric parameters of Nd^(3+)-doped l.th.um tel.urite gl.sses

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Journal.of Rare Earth. 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.l.Sil.a l.A.O.Nunes S.M.l.ma l.h.C.Andrade Optical.and Ph.toth.rmal.Spectroscopy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Arch.r Information Tech.ol.gy Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Ph.sics of São Carl.s University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tel.urite gl.sses are promising material. for th.rmometers based on th. fl.orescence intensity ratio(FIR)***,at h.gh.Nd^(3+)concentrations,energy transfer(ET)processes such.as optical.reabsorption and cross-rel.xation can affect th. Nd^(3+)emission,wh.ch.h.s been l.ttl. expl.red in th. ***,th. present work investigated th. use of Nd^(3+)-doped tel.urite gl.ss(sampl.s doped with.Nd^(3+)at 0.2 mol.,0.5 mol.,2.0 mol.,and 4.0 mol.)in fl.orescence th.rmometers,in th. temperature range from 299 to 371 *** resul.s indicate a strong dependence of th. FIR parameters on th. Nd^(3+)concentration,due to ch.nges in th. emission band profil.s caused by optical.reabsorption of th. Nd^(3+)emissions and cross-rel.xation processes.A decrease of th. rel.tive sensitivity of th. ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for sampl.s doped with.h.gh.r amounts of Nd^(3+).Th. maximum rel.tive sensitivity at 299 K is 3.00%/K,wh.ch.is th. h.gh.st val.e among th. reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tel.urite gl.ss Fl.orescence intensity ratio Optical.th.rmometry Judd-Ofel. Rare earth.

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Racial.and Eth.ic Differences in Orth.rexia Nervosa Symptomatol.gy and Oth.r Disordered Eating

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Open Journal.of Psych.atry 2024年第4期14卷 287-299页

作者： Dil.n h. Arreguin Kendria S. Sh.el.s-Rh.des Mel.ssa l. h.rel.Crystal.D. Oberl. Department of Psych.l.gy Texas State University San Marcos TX USA

Wh.l. some research.h.s expl.red racial.and eth.ic differences in disordered eating, th.s study may be th. first to examine th.se differences in orth.rexia nervosa, invol.ing obsessive-compul.ive th.ugh.s and beh.viors concerning h.al.h. eating, wh.ch.negativel. impact one’s l.fe. Adul. participants, recruited from col.ege courses and social.media, compl.ted an onl.ne survey with.th. Orth.rexia Nervosa Inventory (ONI) and th. Eating Attitudes Test-26 (EAT-26). Regarding racial.and eth.ic background, 743 were Wh.te, 249 were h.spanic, 87 were Bl.ck, 61 were Asian or Pacific Isl.nder, and 110 were biracial.mul.iracial. A MANCOVA reveal.d th.t th. racial.and eth.ic groups did not differ on th. ONI subscal.s assessing orth.rexic beh.viors, impairments, and emotions, after accounting for gender, BMI, and EAT-26 total.scores th.t were covariates. In contrast, a second MANCOVA did reveal.group differences on th. EAT-26 subscal.s, after accounting for gender, BMI, and ONI total.scores th.t were covariates. Bl.ck participants scored significantl. l.wer th.n th. oth.r racial.and eth.ic groups on th. subscal. assessing dieting beh.viors ch.racteristic of anorexia nervosa, and th. subscal. assessing binge-eating and purging beh.viors ch.racteristic of bul.mia nervosa. Furth.r, h.spanic participants scored significantl. l.wer th.n Wh.te participants on th. l.tter subscal.. Th.se findings suggest th.t wh.l. orth.rexic symptomatol.gy does not differ based on race and eth.icity, a Bl.ck race and h.spanic eth.icity may be protective factors against disordered eating, perh.ps rel.ted eith.r to cul.ural.norms concerning body image or to th. resil.ency and social.support among th. Bl.ck and h.spanic communities.

关键词： Race Eth.icity Orth.rexia Disordered Eating

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